ONE #217
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Tainted Observer
Creature · Phyrexian BirdFlying, Toxic, Proliferate
TCGplayer market · ONE #217 nonfoil
$0.27 −3.6% −$0.01, 7 days
- 1-year range
- 30 days
- −6.9%
- EDHREC rank
- #7,287 Down 115 in 30 days
- Best buylist
Buy ONE #217 nonfoil
TCGplayer, $0.27 (opens in a new tab) Card Kingdom, (opens in a new tab) Mana Pool, (opens in a new tab) eBay, Check price (opens in a new tab)
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Tainted Observer Price Summary
The benchmark price (cheapest playable nonfoil) is $0.27, down 3.6% over 7 days, down 6.9% over 30 days, up 8.0% over 90 days.
Tainted Observer Price History
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Reprints in this period
Tainted Observer price history chart, default range 3 months. currently $0.27.
Where to Buy and Sell Tainted Observer
Every market we track for ONE #217 nonfoil on one line. The gray band is what you give up selling to a store instead of buying at market.
Tainted Observer in Sealed Products
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Tainted Observer Printings & Prices
Tainted Observer has 1 tracked printing across 1 sets, in nonfoil and foil finishes.
Sell Tainted Observer: Buylist Offers
| Buyer | Printing | Finish | Cash offer | Market | Spread to market |
|---|---|---|---|---|---|
| Card Kingdom | ONE #217 | Foil | |||
| CoolStuffInc | ONE #217 | Foil | |||
| Card Kingdom | ONE #217 | Nonfoil |
Tainted Observer Rules Text & Legality
Tainted Observer
Flying
Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
Whenever another creature you control enters, you may pay {2}. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Tainted Observer is legal in Pioneer, Modern, Legacy and Commander, and not legal in Standard and Pauper.
- BrawlLegal
- CommanderLegal
- Competitive BrawlLegal
- Duel CommanderLegal
- GladiatorLegal
- HistoricLegal
- LegacyLegal
- ModernLegal
- OathbreakerLegal
- PioneerLegal
- TimelessLegal
- VintageLegal
- AlchemyNot legal
- Future StandardNot legal
- Old SchoolNot legal
- PauperNot legal
- Pauper CommanderNot legal
- Penny DreadfulNot legal
- PreDHNot legal
- PremodernNot legal
- StandardNot legal
- Standard BrawlNot legal
Tainted Observer Rulings
- Feb 4, 2023
A player with ten or more poison counters loses the game. This is a state-based action and doesn't use the stack. In other words, it happens immediately and players can't respond to it, just like a player losing the game due to having 0 or less life.
- Feb 4, 2023
An ability that triggers "Whenever you proliferate" triggers even if you chose no permanents or players while doing so.
- Feb 4, 2023
Any other effects of that damage, such as life gain from lifelink, still apply.
- Feb 4, 2023
Conversely, replacement effects that apply to the number of counters put on a player can modify the counters placed this way. For example, Vorinclex, Monstrous Raider's last two abilities can apply to counters placed this way.
- Feb 4, 2023
Damage dealt by a creature with toxic grants the same number of counters regardless of how much damage is dealt. Notably, if a replacement effect modifies the damage in some way (such as that of Gratuitous Violence), the number of counters given remains unchanged.
Reprints & Reprint Risk
Tainted Observer has been reprinted 2 times.
- Feb 10, 2023Phyrexia: All Will Be OneONE #217
- Feb 10, 2023Phyrexia: All Will Be One · foilONE #217
Tainted Observer in Commander
Tainted Observer is the #7,287 most-played card on EDHREC, down 115 places over the last 30 days.
#7,287
EDHREC rank
across all Commander decks Down 115 in 30 days
across all Commander decks Down 115 in 30 days
Tainted Observer FAQ
How much is Tainted Observer worth?
Tainted Observer is worth about $0.27 for its cheapest playable printing as of Nov 9, 2026.
Is Tainted Observer legal in Commander?
Yes. Tainted Observer is legal in Commander. It is also legal in Pioneer, Modern and Legacy.
Has Tainted Observer been reprinted?
Yes. Tainted Observer has been reprinted 2 times, with 1 printings tracked on The Index.
Why is Tainted Observer cheap?
Tainted Observer trades at about $0.27; 2 reprints keep supply plentiful, and Commander demand is modest (#7,287 on EDHREC).